Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:78:20 –

And the mountains are removed and will be ˹but˺ a mirage.  

and the mountains are set in motion, dislocated from their positions, and become as a mirage, as fine dust, that is to say, like it in terms of its levity when in motion.
القرآن:٧٨:٢٠ –

وَسُيِّرَتِ الْجِبَالُ فَكَانَتْ سَرَابًا  

{وسيِّرت الجبال} ذهب بها عن أماكنها {فكانت سرابا} هباء، أي مثله في خفة سيرها.